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Finding the Fourth Proportional to 114,988.67, 158,684.31 and 64,687.67

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Solution

The fourth proportional to 114,988.67, 158,684.31 and 64,687.67 is: 89,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,988.67 : 158,684.31 = 64,687.67 : x
  2. Step 2: Convert to fraction form
    114,988.67/158,684.31 = 64,687.67/x
  3. Step 3: Cross multiply
    114,988.67x = 158,684.31 × 64,687.67
  4. Step 4: Simplify right side
    114,988.67x = 10,264,918,279.46
  5. Step 5: Solve for x
    x = 10,264,918,279.46/114,988.67
  6. Step 6: Final answer
    x = 89,268.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.